Think all graffiti is bad? Check out Guerrilla Knitting- it's about using one of Britain's retro hobbies to brighten up our world! Knitters use their surroundings as a canvas to showacse their art. Check out Knit The City here: http://knitthecity.com/ Want to have a go yourself? Get some basic knitting skill down here: http://www.ukhandknitting.com/learn_to_knit.php